METHODS AND EQUIPMENT FOR PROVIDING BACKUP POWER IN CELLULAR BASE STATIONS
First Claim
1. A load accumulator for a cellular base station antenna, the load accumulator comprising:
- a plurality of input terminals configured to receive a plurality of input voltages;
a plurality of output terminals configured to be coupled to a respective plurality of tower top equipment and configured to supply output voltages to the tower top equipment;
a plurality of switches coupled to respective ones of the plurality of input terminals and the plurality of output terminals;
a voltage sensor coupled to at least one input terminal of the plurality of input terminals and configured to sense a level of one of the plurality of input voltages received at the at least one input terminal;
a supplemental input terminal configured to receive a supplemental voltage; and
a control logic coupled to the voltage sensor and to the plurality of switches and configured to detect that the supply voltage supplied to the at least one input terminal has fallen below a threshold voltage, and in response to detecting that the supply voltage supplied to the at least one of the plurality of input terminals has fallen below the threshold voltage, to supply the supplemental voltage to a respective one of the plurality of output terminals.
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Accused Products
Abstract
A load accumulator for a cellular base station antenna includes a plurality of input terminals configured to receive a plurality of input voltages, a plurality of output terminals configured to be coupled to a respective plurality of tower top equipment and configured to supply output voltages to the tower top equipment, a plurality of switches coupled to respective ones of the plurality of input terminals and the plurality of output terminals; a voltage sensor coupled to at least one input terminal of the plurality of input terminals and configured to sense a level of one of the plurality of input voltages received at the at least one input terminal, a supplemental input terminal configured to receive a supplemental voltage, and a control logic coupled to the voltage sensor and to the plurality of switches and configured to detect that the supply voltage supplied to the at least one input terminal has fallen below a threshold voltage, and in response to detecting that the supply voltage supplied to the at least one of the plurality of input terminals has fallen below the threshold voltage, to supply the supplemental voltage to a respective one of the plurality of output terminals.
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Citations
20 Claims
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1. A load accumulator for a cellular base station antenna, the load accumulator comprising:
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a plurality of input terminals configured to receive a plurality of input voltages; a plurality of output terminals configured to be coupled to a respective plurality of tower top equipment and configured to supply output voltages to the tower top equipment; a plurality of switches coupled to respective ones of the plurality of input terminals and the plurality of output terminals; a voltage sensor coupled to at least one input terminal of the plurality of input terminals and configured to sense a level of one of the plurality of input voltages received at the at least one input terminal; a supplemental input terminal configured to receive a supplemental voltage; and a control logic coupled to the voltage sensor and to the plurality of switches and configured to detect that the supply voltage supplied to the at least one input terminal has fallen below a threshold voltage, and in response to detecting that the supply voltage supplied to the at least one of the plurality of input terminals has fallen below the threshold voltage, to supply the supplemental voltage to a respective one of the plurality of output terminals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A backup power system for a cellular base station antenna, comprising:
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an auxiliary voltage source; and a load accumulator comprising; an input terminal configured to receive an input voltage; an output terminal configured to be coupled to a tower top equipment and configured to supply an output voltage to the tower top equipment; a switch coupled to the input terminal and the output terminal; a voltage sensor coupled to at least one input terminal of the plurality of input terminals and configured to sense a level of the input voltage received at the input terminal; a supplemental input terminal coupled to the auxiliary voltage source and configured to receive a supplemental voltage from the auxiliary voltage source; and a control logic coupled to the voltage sensor and to the switch and configured to detect that the supply voltage supplied to the input terminal has fallen below a threshold voltage, and in response to detecting that the supply voltage supplied to the input terminal has fallen below the threshold voltage, to supply the supplemental voltage to the output terminal. - View Dependent Claims (14, 15)
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16. A method of supplying power to a tower top equipment (TTE) mounted on an antenna tower, the method comprising:
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detecting a power supply voltage that is supplied to the TTE by a power supply line that extends from a ground mounted power supply to the TTE on the antenna tower; comparing the power supply voltage to a threshold voltage associated with the TTE; and in response to comparing the power supply voltage to the threshold voltage associated with the TTE, supplying an auxiliary voltage to the TTE. - View Dependent Claims (17, 18, 19)
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20. The method of 16, wherein supplying the auxiliary voltage comprises generating a high voltage at a ground mounted backup power source;
- supplying the high voltage to a tower mounted voltage converter; and
converting the high voltage to the auxiliary voltage at the tower mounted voltage converter.
- supplying the high voltage to a tower mounted voltage converter; and
Specification